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Home  >  275 / 45 21  >  Sonix  >  Sonix 275 / 45 21
Identify the size of your tyre
The exact dimensions of a tyre can be found on the sidewall printed mark. The graphic shows how to read properties and dimensions of the tyre:
 
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SPEED INDEX:
The speed index indicates the maximum speed intended for the tyre. Up to this value, the manufacturer guarantees optimum operation with the appropriate tyre pressure. The maximum speed allowed for this vehicle is given in the vehicle owner's manual; this information can be used to select the appropriate speed index for the tyre. The speed index is the last mark on the sidewall of the tyre.
 
Load Index
Permissible maximum axle load per tyre in kg. To be found in the registration certificate or vehicle registration document or read directly from the tyre (two-digit number). It is permitted to fit a tyre with a higher load index.
 
Driving safety despite puncture
Runflat tyres are puncture-resistant tyres with reinforced sidewalls. This creates the so-called run-flat property. In the event of damage, this allows the vehicle to continue driving up to a distance of approx. 100 km (and even beyond depending on the product) at a maximum speed of 80 km/h, even if the pressure has been completely lost. Run-flat tyres even prevent the tyre rubber from jumping off the rim in the event of a loss of air pressure. A flat tyre is therefore still a flat tyre, but it loses some of its drama. Note: All run-flat tyres are marked with the symbol "RSC" (Runflat System Component) and may only be fitted in vehicles with a functioning air pressure control system!
 
Tyres with increased load capacity
Reinforced tyres are designed for higher loads than normal tyres. They can be identified by the designation 'RF' (reinforced) or also 'XL' or 'Extra Load'. They are used on vans, minibuses, off-road vehicles, etc. However, their mounting alone does not automatically result in higher load capacity but also requires a correspondingly higher air pressure. Furthermore, the load capacity index specified in the vehicle documents continues to apply.
 
Tyres with extra high load capacity
The "C" in the term C tyres stands for "commercial". These tyres are specially designed for commercial vehicles. These can be, for example, lighter trucks, delivery vans, flatbed trucks or panel vans. In other words: vehicles that have to move higher loads at a comparatively lower speed. The multi-ply reinforced C tyres are therefore even more load-bearing than reinforced tyres.
 
Mobility-optimised tyres
A tyre with a sealing layer on the opposite side of the tyre tread. In the event of a puncture (e.g. by a nail), this layer blocks any loss of air, even if the foreign body causing the puncture is still in the tyre. It is not necessary to stop or change the tyres immediately at the roadside.
 
Mobility-optimised tyres
A tyre with a sealing layer on the opposite side of the tyre tread. In the event of a puncture (e.g. by a nail), this layer blocks any loss of air, even if the foreign body causing the puncture is still in the tyre. It is not necessary to stop or change the tyres immediately at the roadside.
 
Tyres optimised for electric vehicles.
Tyre developed for electric vehicles. These tyres can also be used without hesitation on vehicles with other drive systems.
 

Our offer for  Sonix    275/45  21     

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Lanvigator Catch Power Plus
Lanvigator
Catch Power Plus
275/45 ZR21 110Y XL

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip B Noise emissions 72 dB
just  130.87 £
available
Details
Minerva Frostrack UHP
Minerva
Minerva
Frostrack UHP
275/45 R21 110V XL

Tyre type

 Winter tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip C Noise emissions 73 dB
Client reviews rating:
Client reviews rating

More than 5 billion kilometers. <span><em>Tyretest.com</em></span> offers over 430 000 tests firsthand - from consumers for consumers.

(1)
Average based on 1 test results  N/A
Grip in dry conditions
Braking in dry conditions
Grip in wet conditions
Braking in wet conditions
Grip in snow
Driving comfort
Internal noise level
Tyre wear
Fuel consumption
Kilometers driven 33000
(1)

Reifentest.com

just  132.20 £
available
Details
Mazzini Eco 602
Mazzini
Eco 602
275/45 ZR21 110W XL

Tyre type

 Summer tyres
limited stock
just  132.52 £
limited stock
Details
Linglong Grip Master C/S
Linglong
Linglong
Grip Master C/S
275/45 R21 110W XL

Tyre type

 Summer tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip A Noise emissions 73 dB
just  132.70 £
limited stock
Details
Sailun Atrezzo ZSR
Sailun
Sailun
Atrezzo ZSR
275/45 ZR21 110Y XL

Tyre type

 Summer tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip A Noise emissions 72 dB
Client reviews rating:
Client reviews rating

More than 5 billion kilometers. <span><em>Tyretest.com</em></span> offers over 430 000 tests firsthand - from consumers for consumers.

(1)
Average based on 1 test results  N/A
Grip in dry conditions
Braking in dry conditions
Grip in wet conditions
Braking in wet conditions
Grip in snow
Driving comfort
Internal noise level
Tyre wear
Fuel consumption
Kilometers driven 230700
20.12.2019 from Gareth
Our other car is a kuga and if I was reviewing it on that it would be a differant review however given the car has over 300lb/ft of torque these aren&#39;t the tyres you want on the rears (they were on the car when I bought it). In the wet the traction control light is a permenant fixture if I get spirited and corners can be challenging if taken with some gusto so in short on a focus or an Astra fine but something with a bit of oomph I would pass on them and spend a bit more. You&#39;ll only end up taking them off
(1)

Reifentest.com

just  136.70 £
limited stock
Details
Zeetex HP6000 Eco
Zeetex
Zeetex
HP6000 Eco
275/45 ZR21 110W XL

Tyre type

 Summer tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip C Noise emissions 73 dB
just  136.95 £
limited stock
Details
Imperial Ecosport SUV
Imperial
Imperial
Ecosport SUV
275/45 R21 110Y XL

Tyre type

 Summer tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip C Noise emissions 72 dB
just  137.76 £
limited stock
Details
Minerva Ecospeed 2 SUV
Minerva
Minerva
Ecospeed 2 SUV
275/45 R21 110Y XL

Tyre type

 Summer tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip C Noise emissions 72 dB
just  140.52 £
limited stock
Details
Tracmax X Privilo RS-01 Plus
Tracmax
X Privilo RS-01 Plus
275/45 ZR21 110W XL

Tyre type

 Summer tyres
limited stock
just  141.55 £
limited stock
Details
Ilink Snowgripper 2
Ilink
Snowgripper 2
275/45 R21 110H XL

Tyre type

 Winter tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip D Noise emissions 71 dB
just  142.11 £
available
Details
Transmate Sport D1
Transmate
Sport D1
275/45 ZR21 110Y

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip B Noise emissions 71 dB
just  142.30 £
available
Details
Vredestein Ultrac Vorti+
Vredestein
Vredestein
Ultrac Vorti+
275/45 ZR21 110(Y) XL

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance D Wet grip B Noise emissions 71 dB
just  142.60 £
available
Details
Unigrip Lateral Force Sport
Unigrip
Unigrip
Lateral Force Sport
275/45 R21 110Y XL

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance B Wet grip B Noise emissions 73 dB
just  143.77 £
available
Details
Sentury Seasonsdragon 2
Sentury
Seasonsdragon 2
275/45 ZR21 110W XL

Tyre type

 All-season tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance B Wet grip B Noise emissions 73 dB
just  144.75 £
limited stock
Details
APlus A610
APlus
A610
275/45 R21 110Y XL

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip B Noise emissions 72 dB
just  145.63 £
available
Details
Zeetex SU5000 Max
Zeetex
Zeetex
SU5000 Max
275/45 R21 110Y XL

Tyre type

 Summer tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance B Wet grip B Noise emissions 71 dB
just  146.05 £
limited stock
Details
Kumho Ecsta PS71 SUV
Kumho
Kumho
Ecsta PS71 SUV
275/45 ZR21 110Y XL

Tyre type

 Summer tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip A Noise emissions 73 dB
just  148.93 £
limited stock
Details
GT Radial SportActive 2
GT Radial
GT Radial
SportActive 2
275/45 R21 110Y XL

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip A Noise emissions 69 dB
just  149.81 £
available
Details
Grenlander Icedefensor Stud II
Grenlander
Icedefensor Stud II
275/45 R21 110T XL studdable

Tyre type

 Winter tyres
limited stock
just  154.11 £
limited stock
Details
Triangle EffeXSport TH202
Triangle
Triangle
EffeXSport TH202
275/45 R21 110Y XL

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip A Noise emissions 73 dB
Client reviews rating:
Client reviews rating

More than 5 billion kilometers. <span><em>Tyretest.com</em></span> offers over 430 000 tests firsthand - from consumers for consumers.

(1)
Average based on 1 test results  N/A
Grip in dry conditions
Braking in dry conditions
Grip in wet conditions
Braking in wet conditions
Grip in snow  N/A
Driving comfort
Internal noise level
Tyre wear
Fuel consumption
Kilometers driven 243796
26.02.2025 from Phillip Claridge
The car was supplied to me with brand new Triangle tyres - a brand I had not heard of and was not one I would have gone for but in the year that I have had them on the car, I have no complaint about their performance. I cannot say whether they would be the tyre of choice when replacement is necessary. t
(1)

Reifentest.com

just  156.51 £
available
Details
Fronway Eurus 08
Fronway
Eurus 08
275/45 R21 110W XL

Tyre type

 Summer tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip B Noise emissions 72 dB
just  162.59 £
limited stock
Details
Momo Toprun M-30 Europa
Momo
Toprun M-30 Europa
275/45 R21 110Y XL

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip C Noise emissions 73 dB
just  164.66 £
available
Details
Kumho Ecsta PS71 SUV
Kumho
Kumho
Ecsta PS71 SUV
275/45 ZR21 110Y XL

Tyre type

 Summer tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip A Noise emissions 73 dB
just  167.33 £
available
Details
Zmax WinterHawke II
Zmax
WinterHawke II
275/45 R21 110H XL

Tyre type

 Winter tyres
available
just  167.88 £
available
Details
Gripmax Suregrip Pro Winter
Gripmax
Suregrip Pro Winter
275/45 R21 110V XL

Tyre type

 Winter tyres
available
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip C Noise emissions 72 dB
just  168.02 £
available
Details
Tracmax X-Privilo S360
Tracmax
X-Privilo S360
275/45 R21 110T XL

Tyre type

 Winter tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance C Wet grip C Noise emissions 72 dB
just  169.50 £
limited stock
Details
Zeta Impero
Zeta
Zeta
Impero
275/45 R21 110Y XL

Tyre type

 Summer tyres
limited stock
EU Tyre Label
EU Tyre Label
Roll resistance B Wet grip B Noise emissions 73 dB
just  170.23 £
limited stock
Details
Mazzini Snowleopard 3
Mazzini
Snowleopard 3
275/45 R21 110H Nordic Compound

Tyre type

 Winter tyres
available
just  171.31 £
available
Details
There are 28 of 161 tyres displayed
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